Sprinkler



R. W. JOHNSON AND J. BLOOM.

SPRINKLER.

APPLICATION FILED JUNE 13. 1919.-

1,336,699. Patented Apr. 13, 1920.

l lit. OWE.

Z 1 /7 1* m H m nu SE:

INVENTOR 72a [-ert YY, Ma /015022,

- -/((77L51BZ0077L,

UNITED STATE'ENT OFFICE.

ROBERT W. JOHNSON .AND JAMES BLOO OF BL E ISLAND, IL INOI SPRINKLER.

Specification of Letters Patent.

Patented Apr. 13, 1920.

Application filed. June 13, 1919. Serial No. 303,879.

To all whom it may concern:

Be it known that we, ROBERT 1V. JorrNsoN and James BLOOM, citizens of the United States, residing at Blue Island, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Sprinklers, of which the following is a specification.

Our present invention relates generally to sprinklers and more particularly to steam pressure sprinklers, our object being the provision of a novel, safe, and convenient coal sprinkler for locomotive tenders, although not necessarily limited to this particular use.

It has long been an objection, in connection with coal sprinklers, for instance, as with other sprinklers utilizing steam pressure for the purpose of lifting the required water and spraying the same, that leakage or inadvertent failure to close the steam supply throws open the danger of scalding by steam which, at the required pressure, is, of course, at a high temperature in the absence of water. i I v The primary object of the invention is to avoid the above disadvantages and provide a steam pressure sprinkler in which the sprinkler connection is entirely out ofi from the steam supply, except when water is fed with the steam and is thus present to temper the extreme heat of the steam supply.

In the accompanying drawings:

Figure 1 is a sectional view through our improved sprinkling arrangement; and

Figs. 2 and 3 are horizontal sections taken respectively on thelines 22-and 3-3 of Fig. 1, and looking in relatively opposite directions.

Referring now to these figures our invention proposes a mainsprinkling valve generally indicated at 10, whose body has a main lengthwise 'bore 11 separated at its lower end from a valve chamber 12 by means of an apertured and internally threaded partition 13 into which the lower reduced end 14 of a siphon tube 15 is screwed. This tube upstands within the main bore 11 of the valve body, and has an upper enlarged end 16 opposite a laterally projecting internally threaded nipple 17 of the body and below a steam plug 18 threaded into the upper end of the valve body 10.

The steam plug 18 has an axial bore 19 and an upper internally threaded counterbore into which is screwed the adjacent end of the steam supply pipe 20, having a control and cutoff valve 21 interposed at a convenient point in its length.

The lateral nipple 17 before referred to, is internally threaded for the reception of the water supply pipe 22 which may be extended into any convenient water supply and which is preferably provided with a control and cutoff valve 23.

The valve chamber 12, before referred to, is closed at one side by a plug 2 1, through which access may be had to the chamber for cleaning purposes, this plug being threaded into an opening of the valve body 10. At its opposite side the valve chamber 12 is in communication with a waste nipple 25 from which a waste pipe 26 may be extended, this communication being through a reduced channel 27 at one side of which and adjacent tothe valve chamber is formed a concave seat 28 for a ball valve 29 which is freely movable in the chamber 12 and shiftable to the seat 28 when the valve is in operation. V

At the lower end of the valve chamber 12 the valve body 10 has a threaded opening flexible or-other spray pipe 31 may be connected as by means of a clamp 32, either with or without a rigid spray nozzle 33, and the upper inner square end 30 of the spray pipe nipple 3O normally receives the valve 29 therein, as shown in Fig. 1, when the valve is inactive, the ball shifting by gravity to this, the lowest point, of the chamber. It is thus obvious in the inactive position the spray pipe is closed with respect to the steam passage through the steam plug 18 and the siphon tube 15, these parts being at this time in communication with the waste pipe 26 through the channel 27. This position of .the parts remains as described any time there happens to be a leakage of steam past V the cutoff valve 21 of the steam supply pipe,

the steam thus being passed into the waste pipe so that all danger of scalding when the spray nozzle is handled is thereby avoided. 7

In operation, however, when the steam pressure is turned on by opening the controlling valve 21, and the valve 23 controlling the water supply pipe is also open, the jet of steam through the steam nozzle or plug 18 and the siphon tube 16 sucks water through the pipe 22- and into the siphon tube, so that this water, mixed with the steam, tempers its extreme heat to a safe point. At the same time, the water passing with the steam intothe valve chamber 12 lifts the ball 29 from the spray pipe nlpple 30, and the pressure forces the ball onto the seat 28 thus cutting off communication with the waste pipe and completely opening the passage through the valve chamber to the spray pipe 31.

Thus, in connection with the use for which our invention is particularly designed, though not necessarily limited, the water 18 lifted from the tank or from a convenient stream and the like, and the coal supply of the tender may be sprayed from time to time, using steam from the locomotive boiler for this purpose, the waste pipe 26 bemg usually extended down at one side of the tender so that with the parts operating, as above described, all danger of scalding of the operators is clearly avoided.

We claim- I 1. A spraying device including a valve body having a main bore provided with steam and water connections, a siphon tube within the said bore having one end adjacent to both the steam and water connections, said valve body having a valve chamher with which the opposite end of the siphon tube communicates, a spray pipe connection opening through the lower portion of the said valve chamber, a waste nipple leading from one side of the valve chamber and having a concave valve seat, and a ball forming a valve and freely movable in the said valve chamber. 7

2. A spraying device including a valve body having a main bore provided with steam and water supply connections, the former of which communicates with one end of the said bore, a siphon tube extending longitudinally within the said main bore and having one end thereof disposed adjacent to and communicating with the steam and water supply connections, said valve body having a valve chamber with which the opposite end of the siphon tube communicates and also having a waste nipple in communication with one side of the valve chamber and a valve seat around the inner end of said nipple, a spray pipe having a nipple threaded into the valve body at the lowermost point of and in communication with the said valve chamber, and a ball valve movable freelyin the valve chamber and seated on the inner end of the said spray pipe nipple when the valve is inactive.

3. A spraying device including a valve body having a main bore provided with steam and water supply connections, the former of which communicates with one end and a valve seat around the inner end of said 7 nipple, a spray pipe having a'nipple threaded into the valve body at the lowermost point of and in communication with the said valve chamber, a ball valve movable freely in the valve chamber and seated on the inner end of the said spray pipe nipple when the valve is inactive, said valve body having a threaded opening communicating with the valve chamber and through which access may be had to the latter for cleaning purposes, and a screwed plug normally closing the said opening, as described.

.4. A spraying device including a valve body having an elongated main bore and a water connection communicating with one side of the said bore adjacent to one end thereof, a steam plug threaded into the latter end of the valve body, having a steam supply pipe and a steam nozzle opening axially into the main bore, a siphon tube extending longitudinally within the main bore and having one end opening adjacent to the said steam plug and the water connection, said valve body having a valve chamber adjacent to its opposite end and with which the opposite end of the siphon tube is in communication, a waste nipple leading from one side of the valve chamber and having a valve seat at its inner end, a ball movable freely within the valve chamber to and from said seat, and a spray pipe having a nipple threaded into the valve body at the lowermost point of the valve chamber to receive the said ball thereon when the device is inactive.

5; A spraying device including a body having a main bore provided with steam and water supply connections, a siphon tube therein which is opened at one end to the said steam and water supply connections, spray and waste connections with which the opposite end of the said; siphon tube is in communication, and a valve movable in a portion of the said body and shiftable between the said spray and waste connections and normally closing the former when the device is inactive.

In testimonyvwhereof we afiix our signatures. V 7

ROBERT W. JOHNSON. JAMES BLOOM. 

